LXR linux/include/trace/events/sched.h

   1#undef TRACE_SYSTEM
   2#define TRACE_SYSTEM sched
   3
   4#if !defined(_TRACE_SCHED_H) || defined(TRACE_HEADER_MULTI_READ)
   5#define _TRACE_SCHED_H
   6
   7#include <linux/sched.h>
   8#include <linux/tracepoint.h>
   9
  10/*
  11 * Tracepoint for calling kthread_stop, performed to end a kthread:
  12 */
  13TRACE_EVENT(sched_kthread_stop,
  14
  15        TP_PROTO(struct task_struct *t),
  16
  17        TP_ARGS(t),
  18
  19        TP_STRUCT__entry(
  20                __array(        char,   comm,   TASK_COMM_LEN   )
  21                __field(        pid_t,  pid                     )
  22        ),
  23
  24        TP_fast_assign(
  25                memcpy(__entry->comm, t->comm, TASK_COMM_LEN);
  26                __entry->pid    = t->pid;
  27        ),
  28
  29        TP_printk("task %s:%d", __entry->comm, __entry->pid)
  30);
  31
  32/*
  33 * Tracepoint for the return value of the kthread stopping:
  34 */
  35TRACE_EVENT(sched_kthread_stop_ret,
  36
  37        TP_PROTO(int ret),
  38
  39        TP_ARGS(ret),
  40
  41        TP_STRUCT__entry(
  42                __field(        int,    ret     )
  43        ),
  44
  45        TP_fast_assign(
  46                __entry->ret    = ret;
  47        ),
  48
  49        TP_printk("ret %d", __entry->ret)
  50);
  51
  52/*
  53 * Tracepoint for waiting on task to unschedule:
  54 *
  55 * (NOTE: the 'rq' argument is not used by generic trace events,
  56 *        but used by the latency tracer plugin. )
  57 */
  58TRACE_EVENT(sched_wait_task,
  59
  60        TP_PROTO(struct rq *rq, struct task_struct *p),
  61
  62        TP_ARGS(rq, p),
  63
  64        TP_STRUCT__entry(
  65                __array(        char,   comm,   TASK_COMM_LEN   )
  66                __field(        pid_t,  pid                     )
  67                __field(        int,    prio                    )
  68        ),
  69
  70        TP_fast_assign(
  71                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
  72                __entry->pid    = p->pid;
  73                __entry->prio   = p->prio;
  74        ),
  75
  76        TP_printk("task %s:%d [%d]",
  77                  __entry->comm, __entry->pid, __entry->prio)
  78);
  79
  80/*
  81 * Tracepoint for waking up a task:
  82 *
  83 * (NOTE: the 'rq' argument is not used by generic trace events,
  84 *        but used by the latency tracer plugin. )
  85 */
  86TRACE_EVENT(sched_wakeup,
  87
  88        TP_PROTO(struct rq *rq, struct task_struct *p, int success),
  89
  90        TP_ARGS(rq, p, success),
  91
  92        TP_STRUCT__entry(
  93                __array(        char,   comm,   TASK_COMM_LEN   )
  94                __field(        pid_t,  pid                     )
  95                __field(        int,    prio                    )
  96                __field(        int,    success                 )
  97                __field(        int,    cpu                     )
  98        ),
  99
 100        TP_fast_assign(
 101                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 102                __entry->pid            = p->pid;
 103                __entry->prio           = p->prio;
 104                __entry->success        = success;
 105                __entry->cpu            = task_cpu(p);
 106        ),
 107
 108        TP_printk("task %s:%d [%d] success=%d [%03d]",
 109                  __entry->comm, __entry->pid, __entry->prio,
 110                  __entry->success, __entry->cpu)
 111);
 112
 113/*
 114 * Tracepoint for waking up a new task:
 115 *
 116 * (NOTE: the 'rq' argument is not used by generic trace events,
 117 *        but used by the latency tracer plugin. )
 118 */
 119TRACE_EVENT(sched_wakeup_new,
 120
 121        TP_PROTO(struct rq *rq, struct task_struct *p, int success),
 122
 123        TP_ARGS(rq, p, success),
 124
 125        TP_STRUCT__entry(
 126                __array(        char,   comm,   TASK_COMM_LEN   )
 127                __field(        pid_t,  pid                     )
 128                __field(        int,    prio                    )
 129                __field(        int,    success                 )
 130                __field(        int,    cpu                     )
 131        ),
 132
 133        TP_fast_assign(
 134                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 135                __entry->pid            = p->pid;
 136                __entry->prio           = p->prio;
 137                __entry->success        = success;
 138                __entry->cpu            = task_cpu(p);
 139        ),
 140
 141        TP_printk("task %s:%d [%d] success=%d [%03d]",
 142                  __entry->comm, __entry->pid, __entry->prio,
 143                  __entry->success, __entry->cpu)
 144);
 145
 146/*
 147 * Tracepoint for task switches, performed by the scheduler:
 148 *
 149 * (NOTE: the 'rq' argument is not used by generic trace events,
 150 *        but used by the latency tracer plugin. )
 151 */
 152TRACE_EVENT(sched_switch,
 153
 154        TP_PROTO(struct rq *rq, struct task_struct *prev,
 155                 struct task_struct *next),
 156
 157        TP_ARGS(rq, prev, next),
 158
 159        TP_STRUCT__entry(
 160                __array(        char,   prev_comm,      TASK_COMM_LEN   )
 161                __field(        pid_t,  prev_pid                        )
 162                __field(        int,    prev_prio                       )
 163                __field(        long,   prev_state                      )
 164                __array(        char,   next_comm,      TASK_COMM_LEN   )
 165                __field(        pid_t,  next_pid                        )
 166                __field(        int,    next_prio                       )
 167        ),
 168
 169        TP_fast_assign(
 170                memcpy(__entry->next_comm, next->comm, TASK_COMM_LEN);
 171                __entry->prev_pid       = prev->pid;
 172                __entry->prev_prio      = prev->prio;
 173                __entry->prev_state     = prev->state;
 174                memcpy(__entry->prev_comm, prev->comm, TASK_COMM_LEN);
 175                __entry->next_pid       = next->pid;
 176                __entry->next_prio      = next->prio;
 177        ),
 178
 179        TP_printk("task %s:%d [%d] (%s) ==> %s:%d [%d]",
 180                __entry->prev_comm, __entry->prev_pid, __entry->prev_prio,
 181                __entry->prev_state ?
 182                  __print_flags(__entry->prev_state, "|",
 183                                { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" },
 184                                { 16, "Z" }, { 32, "X" }, { 64, "x" },
 185                                { 128, "W" }) : "R",
 186                __entry->next_comm, __entry->next_pid, __entry->next_prio)
 187);
 188
 189/*
 190 * Tracepoint for a task being migrated:
 191 */
 192TRACE_EVENT(sched_migrate_task,
 193
 194        TP_PROTO(struct task_struct *p, int dest_cpu),
 195
 196        TP_ARGS(p, dest_cpu),
 197
 198        TP_STRUCT__entry(
 199                __array(        char,   comm,   TASK_COMM_LEN   )
 200                __field(        pid_t,  pid                     )
 201                __field(        int,    prio                    )
 202                __field(        int,    orig_cpu                )
 203                __field(        int,    dest_cpu                )
 204        ),
 205
 206        TP_fast_assign(
 207                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 208                __entry->pid            = p->pid;
 209                __entry->prio           = p->prio;
 210                __entry->orig_cpu       = task_cpu(p);
 211                __entry->dest_cpu       = dest_cpu;
 212        ),
 213
 214        TP_printk("task %s:%d [%d] from: %d  to: %d",
 215                  __entry->comm, __entry->pid, __entry->prio,
 216                  __entry->orig_cpu, __entry->dest_cpu)
 217);
 218
 219/*
 220 * Tracepoint for freeing a task:
 221 */
 222TRACE_EVENT(sched_process_free,
 223
 224        TP_PROTO(struct task_struct *p),
 225
 226        TP_ARGS(p),
 227
 228        TP_STRUCT__entry(
 229                __array(        char,   comm,   TASK_COMM_LEN   )
 230                __field(        pid_t,  pid                     )
 231                __field(        int,    prio                    )
 232        ),
 233
 234        TP_fast_assign(
 235                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 236                __entry->pid            = p->pid;
 237                __entry->prio           = p->prio;
 238        ),
 239
 240        TP_printk("task %s:%d [%d]",
 241                  __entry->comm, __entry->pid, __entry->prio)
 242);
 243
 244/*
 245 * Tracepoint for a task exiting:
 246 */
 247TRACE_EVENT(sched_process_exit,
 248
 249        TP_PROTO(struct task_struct *p),
 250
 251        TP_ARGS(p),
 252
 253        TP_STRUCT__entry(
 254                __array(        char,   comm,   TASK_COMM_LEN   )
 255                __field(        pid_t,  pid                     )
 256                __field(        int,    prio                    )
 257        ),
 258
 259        TP_fast_assign(
 260                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 261                __entry->pid            = p->pid;
 262                __entry->prio           = p->prio;
 263        ),
 264
 265        TP_printk("task %s:%d [%d]",
 266                  __entry->comm, __entry->pid, __entry->prio)
 267);
 268
 269/*
 270 * Tracepoint for a waiting task:
 271 */
 272TRACE_EVENT(sched_process_wait,
 273
 274        TP_PROTO(struct pid *pid),
 275
 276        TP_ARGS(pid),
 277
 278        TP_STRUCT__entry(
 279                __array(        char,   comm,   TASK_COMM_LEN   )
 280                __field(        pid_t,  pid                     )
 281                __field(        int,    prio                    )
 282        ),
 283
 284        TP_fast_assign(
 285                memcpy(__entry->comm, current->comm, TASK_COMM_LEN);
 286                __entry->pid            = pid_nr(pid);
 287                __entry->prio           = current->prio;
 288        ),
 289
 290        TP_printk("task %s:%d [%d]",
 291                  __entry->comm, __entry->pid, __entry->prio)
 292);
 293
 294/*
 295 * Tracepoint for do_fork:
 296 */
 297TRACE_EVENT(sched_process_fork,
 298
 299        TP_PROTO(struct task_struct *parent, struct task_struct *child),
 300
 301        TP_ARGS(parent, child),
 302
 303        TP_STRUCT__entry(
 304                __array(        char,   parent_comm,    TASK_COMM_LEN   )
 305                __field(        pid_t,  parent_pid                      )
 306                __array(        char,   child_comm,     TASK_COMM_LEN   )
 307                __field(        pid_t,  child_pid                       )
 308        ),
 309
 310        TP_fast_assign(
 311                memcpy(__entry->parent_comm, parent->comm, TASK_COMM_LEN);
 312                __entry->parent_pid     = parent->pid;
 313                memcpy(__entry->child_comm, child->comm, TASK_COMM_LEN);
 314                __entry->child_pid      = child->pid;
 315        ),
 316
 317        TP_printk("parent %s:%d  child %s:%d",
 318                __entry->parent_comm, __entry->parent_pid,
 319                __entry->child_comm, __entry->child_pid)
 320);
 321
 322/*
 323 * Tracepoint for sending a signal:
 324 */
 325TRACE_EVENT(sched_signal_send,
 326
 327        TP_PROTO(int sig, struct task_struct *p),
 328
 329        TP_ARGS(sig, p),
 330
 331        TP_STRUCT__entry(
 332                __field(        int,    sig                     )
 333                __array(        char,   comm,   TASK_COMM_LEN   )
 334                __field(        pid_t,  pid                     )
 335        ),
 336
 337        TP_fast_assign(
 338                memcpy(__entry->comm, p->comm, TASK_COMM_LEN);
 339                __entry->pid    = p->pid;
 340                __entry->sig    = sig;
 341        ),
 342
 343        TP_printk("sig: %d  task %s:%d",
 344                  __entry->sig, __entry->comm, __entry->pid)
 345);
 346
 347/*
 348 * XXX the below sched_stat tracepoints only apply to SCHED_OTHER/BATCH/IDLE
 349 *     adding sched_stat support to SCHED_FIFO/RR would be welcome.
 350 */
 351
 352/*
 353 * Tracepoint for accounting wait time (time the task is runnable
 354 * but not actually running due to scheduler contention).
 355 */
 356TRACE_EVENT(sched_stat_wait,
 357
 358        TP_PROTO(struct task_struct *tsk, u64 delay),
 359
 360        TP_ARGS(tsk, delay),
 361
 362        TP_STRUCT__entry(
 363                __array( char,  comm,   TASK_COMM_LEN   )
 364                __field( pid_t, pid                     )
 365                __field( u64,   delay                   )
 366        ),
 367
 368        TP_fast_assign(
 369                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 370                __entry->pid    = tsk->pid;
 371                __entry->delay  = delay;
 372        )
 373        TP_perf_assign(
 374                __perf_count(delay);
 375        ),
 376
 377        TP_printk("task: %s:%d wait: %Lu [ns]",
 378                        __entry->comm, __entry->pid,
 379                        (unsigned long long)__entry->delay)
 380);
 381
 382/*
 383 * Tracepoint for accounting runtime (time the task is executing
 384 * on a CPU).
 385 */
 386TRACE_EVENT(sched_stat_runtime,
 387
 388        TP_PROTO(struct task_struct *tsk, u64 runtime, u64 vruntime),
 389
 390        TP_ARGS(tsk, runtime, vruntime),
 391
 392        TP_STRUCT__entry(
 393                __array( char,  comm,   TASK_COMM_LEN   )
 394                __field( pid_t, pid                     )
 395                __field( u64,   runtime                 )
 396                __field( u64,   vruntime                        )
 397        ),
 398
 399        TP_fast_assign(
 400                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 401                __entry->pid            = tsk->pid;
 402                __entry->runtime        = runtime;
 403                __entry->vruntime       = vruntime;
 404        )
 405        TP_perf_assign(
 406                __perf_count(runtime);
 407        ),
 408
 409        TP_printk("task: %s:%d runtime: %Lu [ns], vruntime: %Lu [ns]",
 410                        __entry->comm, __entry->pid,
 411                        (unsigned long long)__entry->runtime,
 412                        (unsigned long long)__entry->vruntime)
 413);
 414
 415/*
 416 * Tracepoint for accounting sleep time (time the task is not runnable,
 417 * including iowait, see below).
 418 */
 419TRACE_EVENT(sched_stat_sleep,
 420
 421        TP_PROTO(struct task_struct *tsk, u64 delay),
 422
 423        TP_ARGS(tsk, delay),
 424
 425        TP_STRUCT__entry(
 426                __array( char,  comm,   TASK_COMM_LEN   )
 427                __field( pid_t, pid                     )
 428                __field( u64,   delay                   )
 429        ),
 430
 431        TP_fast_assign(
 432                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 433                __entry->pid    = tsk->pid;
 434                __entry->delay  = delay;
 435        )
 436        TP_perf_assign(
 437                __perf_count(delay);
 438        ),
 439
 440        TP_printk("task: %s:%d sleep: %Lu [ns]",
 441                        __entry->comm, __entry->pid,
 442                        (unsigned long long)__entry->delay)
 443);
 444
 445/*
 446 * Tracepoint for accounting iowait time (time the task is not runnable
 447 * due to waiting on IO to complete).
 448 */
 449TRACE_EVENT(sched_stat_iowait,
 450
 451        TP_PROTO(struct task_struct *tsk, u64 delay),
 452
 453        TP_ARGS(tsk, delay),
 454
 455        TP_STRUCT__entry(
 456                __array( char,  comm,   TASK_COMM_LEN   )
 457                __field( pid_t, pid                     )
 458                __field( u64,   delay                   )
 459        ),
 460
 461        TP_fast_assign(
 462                memcpy(__entry->comm, tsk->comm, TASK_COMM_LEN);
 463                __entry->pid    = tsk->pid;
 464                __entry->delay  = delay;
 465        )
 466        TP_perf_assign(
 467                __perf_count(delay);
 468        ),
 469
 470        TP_printk("task: %s:%d iowait: %Lu [ns]",
 471                        __entry->comm, __entry->pid,
 472                        (unsigned long long)__entry->delay)
 473);
 474
 475#endif /* _TRACE_SCHED_H */
 476
 477/* This part must be outside protection */
 478#include <trace/define_trace.h>
 479